[ML] Transforms: Fix transform id validation and support for ids with dots

[walterra]

• The validation for transform IDs doesn't match the validation done when run against the ES API (https://github.com/elastic/elasticsearch/blob/master/x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/transform/utils/TransformStrings.java#L23) ([ML] Transforms: Fix transform id validation to use RegExp used in ES code. #98783)
• The UI doesn't allow the creation of transform IDs with dots, but it should be allowed since the ES API allows. If a user creates a transform using the API only, they are able to create and ID with a dot. However, this breaks the expanded row of the transform list when a user navigates away from the default tab (empty page and errors in dev console). ([ML] Transforms: Fix tab ids for expanded row. #80666)